Mid Ocean Ridge: longest chain of mountains in the world Sonar: a device that bounces sound waves off underwater objects and then records the echos of these sound waves Sea Floor Spreading: a process that continually adds new material to the ocean floor Deep Ocean Trench: forms where the oceanic crust bends downward Subduction: the process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle
1.4 Sea Floor Spreading
Vocabulary
Mid Ocean Ridge: longest chain of mountains in the world
Sonar: a device that bounces sound waves off underwater objects and then records the echos of these sound waves
Sea Floor Spreading: a process that continually adds new material to the ocean floor
Deep Ocean Trench: forms where the oceanic crust bends downward
Subduction: the process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle
Outline